作者:Toshinari Kawada、Yuko Yoneda
DOI:10.1007/s00706-009-0172-0
日期:2009.10
The synthesis of the disaccharide tert-butyldimethylsilyl (4-O-acetyl-2-azido-3,6-di-O-benzyl-2-deoxy-beta-D-glucopyranosyl)-3,6-di-O-benzyl-2-deoxy-2-phthalimido-beta-D-glucopyranoside, designed as a repeating unit appearing in oligo-and polysaccharides, which exhibits a distinguished "obverse-reverse" property in beta-1,4-glucan chain, was accomplished. This disaccharide was synthesized by glycosylation of a phthalimido sugar with an azido sugar. A selective removal of the two different protecting groups atC-2 for obtaining 2-acetamido-4-O-(2-amino-2-deoxy-beta-D-glucopyranosyl)-2-deoxy-beta-D-glucopyranose indicates that the selection and combination, using phthalimido and azido as protecting groups, are an excellent strategy for synthesizing such target disaccharides.